Revolving metallic window.



NG. 743,828." PATENTBD'NOV. 1o, 19o3.-

L. CHRISTRENSQN. 'REVOLVING METALLIC. WINDOW.I l

' Y APPLIOATION FILED MAB. 1S, 1903. v N0 MODEL. SHEETS-SHEET l.

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www LW. @Zug No. 743,828. Y PATENTES Nov. 1o, 190s.

l L. GHRISTENSON.

REVOLVIN G METALLICy WINDOW.

P-ISLIUTION I L D M A .18. 1903. A I E AB 3 SHEETS-SHEET 2.

PATENTED NOV. 10', 1903.

. L. CHRISTBNSON.

REVOLVING METALLIC' WINDOW.

APPLICATION FILED MAB. 1a. 1903.

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y UNITED Streit-ns Patented November 10, 1903i.

PATNT rrr-en -REVOLVING METALLIC WINOW.

SPECIFICATION' forming part of Letters Patent No. 743,828, datedNovember 10, 1903.

Application iiled March 18, 1903. Serial No. 148.329. (No model.)

To aZZ whom t may concern:

Be it known that I, LAns CHmsTnNsoN, a citizen of the United States ofAmerica, and a resident of the borough of Bronx, New York city, andState of New York, have invented certain new and useful Improvements inRevolving Metallic Windows, of which the following is a specification.

My invention relates to revolving sheet-k metal windows 5 and itconsists of novel means of balancing the sashes one by the other, sothat they will when opened on their pivots automatically slide up anddown reversely when power is applied to one' or the other, ,and when incase of fire and the sashes are set open on their rotary range ofmovement a fusing-link in the balancingchain sets in motionautomatically rotating closing action of the sashes,ashereinafterdescribed,referencebeingmade to the accompanying drawings,in which- Figure l is a sectional elevation of my im-V proved revolvingwindow, taken on line 2 2, Fig. 2. Fig. 2 is a vertical section on line3 3 of Fig. 3. Fig. 3 is a horizontal section on line 4c et of Fig. 4.Fig. et is a detail in vertical section on line 3 3, Fig. 3, enlarged.

The sashes A and B each carry a pivot-stud.V

c, rigidly attached to the outer edges of the stiles d, midway of theirlength, said pivots being mounted at their outer ends in thesashcarrying spring plates e and extending through the slidingwind-stops 'v and 2. The plates e are coniinedon'the ends of the pivotsby pins e. Said plates are respectively suspended in the slideways f ofthe windowframe by a chain g, the ends of which are respectivelyconnected' to the plates e of both sashes at one side of the window. Thechain g passes over pulleys h at the top of the window-frame, thenceunder the pulley in block t', suspended in the bight of the chain in theopen space j of the window-frame, and carries a weight k, balancing bothsashes and allowing them to slide up and down, respectively, when openon their pivots. The chainsV g each have one or more fusible links, asf', which will part readily under heat, such as they may be exposed toin case of fire in close proximity, the effect of which on the lowersash will be to allow it to fall when raised, whereupon chains m--one toeach side of said sash and attached to pulleys n on the pivots c,respectively, of said sash and suspended over pulleys o at the top ofthe window with a small weight p to take up the slack of the chain whenthe sash is raised and a stop qto limit the run of the chain when thesash fallswill automatically turn the sash upright and close it 'on itspivot when it reaches its normal position. Pulleys n are located on saidpivots next to the spring-slides e.

ln the case of the upper sash its corresponding chains mi, attached toits pulleys n' and passing over pulleys o' at the top, are connected tothe pulley-blocks i, so that the falling of the weights 7c will turnsaid sash on pivots c into the upright normal closed position.

The chains m' are connected to the pulleyblocks with an intermediatecoiled spring r to each to relieve the shocks of the transference of theweights onto them. Veights m2 on the chains m take up the slack of saidchains when said sash may be shifted upward while open, said weightsbeing adapted` to slide along the chains when there is a drop of slack.

The pivots c are xedly secured in blocks 8,.

oc, attached to the spring-slide e, which press' the stops o and 2against the sash-stiles. The stops o are perforated at y for allowingthem to be forced back by the sash-Stiles out of the grooves of thestiles when the sashes are turned on their pivots. In. addition to thesestops n I have provided other stops 2 to pack-against the plain margins3 of the stiles. Said stops are best shown in the horizontal section ofFig. 3. The sides 4 of these stops reach back into the slideways f ofthe side members 6 of the window-frame, and said stops have anintermediate groove S for the sides of the stops o, and in the bottom ofgroove 8 is a reverse groove 7, providing space for said coiled springw, located on the pivotstud c, between the bottom of said groove' 7 andthe sash-turning pulley, 'by which said Ico .pivoted sashes,spring-plates carrying the sash-pivots, chains and pulleys suspendingand balancing said pivot-plates and sashes, and the weights suspended inthe chains intermediately of the sashes.

2. The combination of the upper and lower pivoted sashes, spring platescarrying the sash-pivots, chains and pulleys suspending and balancingsaid spring-plates and sashes, said Chains having a fusible link,weights suspended in the chains intermediately of the sashes, and thestop-Chains and pivot-turning pulleys ofv the lower sash for closingsaid sash when the sash-balancing chains part.

3. The combination of the upper and lower pivoted sashes, spring-platescarrying the sash-pivots, chains and pulleys suspending` and balancingsaid plates and sashes, said Chains having a fusible link, weightssuspended intermediately of the sashes, and the chains connecting theupper sash-pivots and the Weights for closing said upper sash when thesash-balancing chains part.

t. The combination with the frame, a sash, and the intermediateWind-stop, of the Windstop for the margins of the sash-Stiles, said stophaving the sides entering the framegroove, and also having the reversegroove for the intermediate stop and the packingsprings respectively.

Signed at New York this 6th day of March, 1903.

LARS CHRISTENSON.

